Improvement in projectiles for ordnance



JOHN c. BUTLER, or UNITED srn'r'rs huur.v

Letters Patent No. 112,121, dated February 28,` 1871.

IMPROVEMENT IN PROJECTiLES FOR ORDNANCE.

The Schedule referred to in these Letters Patent and making part of the sama.

Is to secure the infallible rotation of the projectile by a. series of studs or buttons, which is forced into the grooves of the gun by a. corresponding series of Wedges, either independent of or attached to a. cmumon metallic disk, and which may combine in thomselves, or be combined with certain keys, consisting of pins or a. ring inserted in cert-aiu otisets or slots in the studs, the purpose of which is to prevent said studs or buttons from being thrown from their sockets, by centrifugal or other force, when the projectile has left the gun.

Description. of the Accompanying Drawings. j

Figure I is a sectional view through the longer axis of my projectile, the part not represented being,r 'of the usuel torni.

Figure 1I is a. partial cross-section through a. b of Fig. I; and a. partial view or elevation of buse of projectile.

Figure III is a. partial side elevation of the saule projectile.

Figure IV is a. partial sectional view through o. projectile with independent wedges.

Figure V is the rear elevation of such a. projectile.' Y

Figure V1 is c partiel side elevation of the sume. The :thovc iigurcs are found ou Sheet I of drewiu s.

On Sheet II of same- Figure VII is a. sectiounl'view in part of n. projectile, with Wedges and keysiudependeut of euch other. Y

Figure VIII is a. rezir elevation and section in partv through a b, Fig'. VII.

Figure IX is npartinl side elevation und section, the key omitted.

Figure X is a. sectional view ln part of a. projectile, with my key applied in the form of n ring.

Figure XI is a. rear elevation of this last projectle.

Figure XII is a partial side elevation of the saine.

GeneralDescripton. A, Fig. I, is the body ofthe projectile;

B is the ruetnllicfdisk; and 0 inthe wedge atroci@ Vthereto or forming part of the same, and workiugi'n a. slot in the studfD,

which is made of any suitable metal, alloy, or metex-inl. i

The metal disk B being dattened against the bese of' the projectile by theforce 0i discharge, the up' tnched wedge C is forced forward into the beveled slot s, thereby driving out the stud D.

While all or" the other wedges, O' C" 0"', and C, Fig. III, perform cache. like function, they, attire, same time, ll up the slots s, Fig. 1, and s' s, Fig. Il, :indv thereby hold the studs firmly iu their pinces after their limited expansion.

A, Fig.l IV, is the body of the projectile.

B is the disk, at the end ol' wedge O.

D is the stud.

s is the slot in the same.

B B" B', Sac., Fig. V, lerre the disks on the bases of the other wedges, and lit into recesses in the base of the shot iu order thnt'the gus of discharge muy opcrate only upon one side.

Sheet II- A, Fig. VII, is the bodyof the projectile.

B is the disk, as before.

G is the wedge, which, in this caso, is rectilinear in cross-section, and works under the beveled edgeot the stud D.

E is the pin or key, screwed into the buse of the slot, and having a. ploy iu the stud D equal to the iutended expansion or lifting of the latter. This key may be regarded as auxiliary, as it. is intended 'and claimed that the violent wedgiug out of the stud D against the bottom of the groove or" the gun shall upset the stud, thereby forcing it to hug closely the roughened surface g h ofits socket, thus securing seid stud in its place.

E E E', dac., Fig. VIII, are the other keys, zuidfh g h', g h", Sac., are the serrated or roughened surr faces of the stud-sockets.

A, Fig. X, is the body of the projectile. The studs D D', Src., are forced out, es belore explained.

F is the dross-section of the annular key, fitting snugly iu arecess in the buse of the projectile. The base of the studs are in this case flush with the bese of the projectile. They are notched at N to zuhuit the annuler key, with just sutiicicnt play to admit of the prop'er expansion of the studs.

F is this annular' key in elevation, Fig. XI.

It will be observed that no part of the disk B and its connected series of wedges is forced into the grooves of the gun, whereby they might be' stripped and distorted, but servo only to force out to n limited distance the studs D D' D, 85o., which, being imbedded in the iron4 body of the projectile, ure iully equal to their duty of rotating und centering it.

Claims, 3. The roughened or ser'ateil surface gv h of' the I claimas my inventioul. The combination of the metallic disk B with the as and for the purpose heeinbefore set forth.

Wedges C O' O, &c., and the movable studsD D D", JQHN Gn BUTLER 85e., substantially as and for the purpose hei'eiubefore sei; forth. Witnesses:

2. The safety/mins or keys'E E' E, Sac., or nng JNO. Z. HERMIT, F, substantially asv and for the purpose vhereiubeiore EDWARD J. MoELRoY.

sel: forth.

stud-sockets, iu combinatipn therwith,substantiallyI fia 

